1. Increased Settler Migration: Expansionist policies encouraged and facilitated the migration of American settlers into Oregon Territory. The idea of "Manifest Destiny" motivated many settlers to move west in search of land, economic opportunities, and a new life.
2. Tensions with Britain: Oregon Territory was jointly occupied by the United States and Britain through the 1818 Convention. Expansionist policies led to tensions between the two nations, particularly during the "Oregon Crisis" of 1845-1846. The dispute was resolved through diplomacy, and the United States gained full control of the region in 1846 with the signing of the Oregon Treaty.
3. Establishment of American Sovereignty: The outcome of expansionist policies was the establishment of American sovereignty over Oregon Territory. The United States claimed this vast region through various means, including exploration, settlement, and diplomacy, solidifying its presence on the Pacific Coast.
4. Creation of Oregon Territory: In 1848, the Oregon Territory was officially organized and established by an Act of Congress. It encompassed present-day Oregon, Washington, Idaho, parts of Montana and Wyoming, and portions of British Columbia in Canada.
5. Gold Rush: The discovery of gold in California during the mid-1840s led to a significant influx of settlers heading to the region. Many passed through or resided in Oregon Territory on their journey, boosting its population and economy.
6. Formation of New States: As the number of settlers increased and the territory developed, Oregon was granted statehood in 1859, followed by Washington in 1889. The remaining portions of the original Oregon Territory went on to become separate states and parts of other states, shaping the modern political map of the Pacific Northwest.
Overall, the outcomes of expansionist policies in Oregon Territory included the establishment of American control, increased settlement, tensions with Britain, and the eventual creation of new states in the region.